Although an NBC rep declined to comment, an insider confirms that the trio will appear in The Office‘s hour-long May 19 season finale as candidates for the vacant office manager position. They join previously announced finale guest stars (and wannabe Dunder Mifflin honchos) Will Arnett and Ricky Gervais.

Of the five finalists, only two stand a realistic chance of taking over the gig full-time: Spader and Tate. Romano’s committed to Men of a Certain Age, Arnett just booked an NBC pilot, and Gervais has been there done that. Will Ferrell, meanwhile, wraps up his arc in mid-May, and — despite buzz to the contrary — is not expected back next season.